Time Traveller

Grimacing at the cold, sludgey water, you fumble your way along the passage, sloshing along in the darkness for what feels like an hour but in fact cannot be much longer than a few minutes.

Just as your feet have gone numb from cold and you are getting fed up with the incessant dripping, you reach a rusty iron ladder below a wooden trapdoor. Clambering up, you shove the trapdoor open and cough in a cloud of dust. As the clerk said, you have emerged behind the liquor store, well away from the bank.

As you climb out, you hear the first gunshots sounding down the street. About time you got out of here. Quickly, you make your way back to where you remember leaving your machine and pull it from its concealment. Making sure no-one can see you, you clamber inside and quickly push the necessary switches and turn the dials. But where will you set the machine to?